Apparatus

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sensors Mode-S transponder

ACBAF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N91934 · CESSNA 172R Cutlass RG · operated by N91934 LLC

Hex
ACBAF8
Octal
53135370
Decimal
11,320,056
Country
US
Tail
N91934
Type
C72R
No current signal · last broadcast 4h ago
Flights observed
88
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S ACBAF8.

Country allocation

The ICAO 24-bit address ACBAF8 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N91934 - 88 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 N91934 HWD → HWD Jun 2, 20:00 UTCJun 2, 20:30 UTC30m
2026-06-01 N91934 - Jun 1, 23:25 UTCJun 2, 00:55 UTC1h 30m
2026-06-01 N91934 - Jun 1, 22:20 UTCJun 1, 22:50 UTC30m
2026-06-01 N91934 HWD → HWD Jun 1, 21:25 UTCJun 1, 22:00 UTC35m
2026-06-01 N91934 HWD → HWD Jun 1, 16:55 UTCJun 1, 18:25 UTC1h 30m
2026-05-31 N91934 - May 31, 17:40 UTCMay 31, 18:55 UTC1h 15m
2026-05-31 N91934 HWD → HWD May 31, 00:10 UTCMay 31, 00:45 UTC35m
2026-05-30 N91934 HWD → HWD May 30, 22:00 UTCMay 30, 22:45 UTC45m
2026-05-29 N91934 HWD → HWD May 29, 17:20 UTCMay 29, 17:35 UTC15m
2026-05-27 N91934 HWD → HWD May 27, 17:50 UTCMay 27, 18:50 UTC1h 0m
2026-05-26 N91934 - May 26, 20:05 UTCMay 26, 20:40 UTC35m
2026-05-26 N91934 - May 26, 17:55 UTCMay 26, 18:34 UTC40m
2026-05-25 N91934 - May 25, 20:45 UTCMay 25, 21:24 UTC40m
2026-05-25 N91934 - May 25, 05:05 UTCMay 25, 06:45 UTC1h 40m
2026-05-25 N91934 - May 25, 02:50 UTCMay 25, 03:20 UTC30m
2026-05-24 N91934 - May 24, 06:05 UTCMay 24, 06:25 UTC20m
2026-05-24 N91934 - May 24, 03:00 UTCMay 24, 05:15 UTC2h 15m
2026-05-24 N91934 - May 24, 01:50 UTCMay 24, 02:05 UTC15m
2026-05-24 N91934 - May 24, 00:30 UTCMay 24, 01:00 UTC30m
2026-05-23 N91934 CCR → HWD May 23, 21:05 UTCMay 23, 21:25 UTC20m
2026-05-23 N91934 HWD → CCR May 23, 19:50 UTCMay 23, 20:05 UTC15m
2026-05-22 N91934 HWD → HWD May 22, 20:55 UTCMay 22, 21:20 UTC25m
2026-05-21 N91934 HWD → HWD May 21, 17:25 UTCMay 21, 18:55 UTC1h 30m
2026-05-20 N91934 - May 20, 22:00 UTCMay 20, 22:50 UTC50m
2026-05-20 N91934 - May 20, 18:00 UTCMay 20, 19:15 UTC1h 15m
2026-05-19 N91934 HWD → HWD May 19, 00:00 UTCMay 19, 01:20 UTC1h 20m
2026-05-17 N91934 HWD → HWD May 17, 22:35 UTCMay 17, 23:05 UTC30m
2026-05-17 N91934 HWD → HWD May 17, 17:40 UTCMay 17, 18:20 UTC40m
2026-05-16 N91934 HWD → HWD May 16, 23:20 UTCMay 17, 00:10 UTC50m
2026-05-16 N91934 HWD → HWD May 16, 21:20 UTCMay 16, 21:55 UTC35m
2026-05-16 N91934 HWD → HWD May 16, 17:20 UTCMay 16, 17:55 UTC35m
2026-05-16 N91934 - May 16, 02:15 UTCMay 16, 03:20 UTC1h 5m
2026-05-15 N91934 - May 15, 23:05 UTCMay 16, 00:00 UTC55m
2026-05-15 N91934 HWD → HWD May 15, 17:25 UTCMay 15, 19:05 UTC1h 40m
2026-05-14 N91934 HWD → HWD May 14, 21:10 UTCMay 14, 22:40 UTC1h 30m
2026-05-14 N91934 HWD → HWD May 14, 16:35 UTCMay 14, 17:45 UTC1h 10m
2026-05-14 N91934 HWD → HWD May 14, 00:05 UTCMay 14, 00:55 UTC50m
2026-05-13 N91934 HWD → HWD May 13, 21:50 UTCMay 13, 22:55 UTC1h 5m
2026-05-12 N91934 HWD → HWD May 12, 22:25 UTCMay 12, 23:35 UTC1h 10m
2026-05-11 N91934 - May 11, 02:15 UTCMay 11, 02:50 UTC35m
2026-05-11 N91934 HWD → HWD May 11, 01:05 UTCMay 11, 01:40 UTC35m
2026-05-09 N91934 HWD → HWD May 9, 23:20 UTCMay 10, 00:05 UTC45m
2026-05-08 N91934 - May 8, 23:20 UTCMay 9, 00:00 UTC40m
2026-05-08 N91934 HWD → LVK May 8, 21:40 UTCMay 8, 21:50 UTC10m
2026-05-08 N91934 - May 8, 00:40 UTCMay 8, 01:14 UTC35m
2026-05-07 N91934 - May 7, 23:59 UTCMay 8, 00:29 UTC30m
2026-05-05 N91934 HWD → HWD May 5, 01:05 UTCMay 5, 01:45 UTC40m
2026-05-04 N91934 - May 4, 02:25 UTCMay 4, 03:09 UTC45m
2026-05-04 N91934 HWD → MOD May 4, 00:25 UTCMay 4, 01:20 UTC55m
2026-05-03 N91934 HWD → HWD May 3, 22:00 UTCMay 3, 22:39 UTC40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N91934 page for operator, model, and routing details .

Mode-S ACBAF8 frequently asked

What is Mode-S code ACBAF8?
ACBAF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N91934.
Where is Mode-S ACBAF8 registered?
Mode-S code ACBAF8 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is ACBAF8 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACBAF8, octal 53135370, decimal 11,320,056.
What flights does ACBAF8 operate?
Mode-S ACBAF8 has broadcast 1 distinct callsign, including N91934.